export var getEnvString = function(): string {
    if (typeof window !== 'undefined') {
        return 'browser'
    } else if (typeof process !== 'undefined') {
        return 'node'
    }
}

export var getUserAgentString = function(): string{
    if (isBrowser()) {
        return  navigator.userAgent
    } else {
        return undefined
    }
}

export var isNode = function(): boolean {
    return getEnvString() === 'node'
}

export var getNodeVersion = function(): string {
    return process.version
}

export var isBrowser = function(): boolean {
    return !isNode()
}

export var isCI = function(){
    if (process.env.CI) {
        return true
    } else {
        return false
    };
}

export var isC9 = function(){
    if (process.env.C9_HOSTNAME) {
        return true
    } else {
        return false
    }
}

export var isTravis = function(){
    if (process.env.TRAVIS) {
        return true
    } else {
        return false
    };
}